Trussed frame for automobiles.



PATENTED DEC. 12. 1905.

B. A. GRAMM. TRUSSED FRAME FOB. AUTOMOBILES.

APPLIUATION FILED JULY 28 1905.

NVENTOR: (33 (1..

By his Attor ney UNITED STATES PATENT OFFICE.

TRUSSED FRAME FOR AUTOMOBILES.

Specification of Letters Patent.

Patented. Dec. 12, 1905.

Application filed July 28, 1905. Serial No. 271,653.

To all whom, it flea/y concern:

Be it known that I, BENJAMIN A. GRAMM, a citizen of the United States, residing in Chillicothe, in the county of Ross and State of Ohio, have invented certain new and useful Im provements in Trussed Frames for Automobiles, of which the following is a description.

My invention relates to improvements in frames for vehicles, and particularly for automobiles; and the object of myinvention is to provide a frame in which the stresses due to the weight carried and to the shocks encountered shall be evenly distributed, making the vehicle ride smoothly and last longer. My new frame is also very light and simple in its construction and affords ready access to the driving parts.

The figure represents suflicient of an automobile-frame to illustrate my invention.

The angle-iron a constitutes one of the longitudinal beams forming one side of the foursided upper framing, and at about midway between the ends of the member a is suitably secured the hanger b, in which is journaled the driving-shaft 0. The ends of the beam at rest upon and are secured to the ordinary elliptical springs d and e, which are mounted, respectively, upon the front and rear axles, (lettered, respectively, f and gin the drawing.

From the ends of the beam a extend downwardly and inwardly to the hanger b two tierods h 71., the lower ends of which are threaded to receive nuts 71 z'. Secured to the top of the lower part of the front spring d by the clips is a plate 7:7, to which is pivotally secured one end of the strut-rod m, the other end of which is pivotally secured to the hanger b. The strut-rod m extends upwardly and inwardly from the plate k and forms a link connecting the front axle f with the central hanger b. Pivotally secured to the axle-box 0 is a second strut-rod n, the other end of which is pivotally secured to the central hanger b. The strut-rod n forms a link connecting the rear axle g through the axle-box 0 with the hanger b and extends upwardly and inwardly from the former to the latter.

By the construction above described the stresses are evenly distributed. The two tierods are-of course under a tensile stress, while the two struts or radius-rods m and n are subjected to a stress of compression, and the tensile stress tends to balance or equalize the compressive stress. Again, a shock produced 1. In an automobile-frame, the combination of a beam; a hanger depending therefrom; a pair of tie-rods extending from the ends of said beam to said hanger; and a pair of strutrods connecting said hanger with the axle members; and said axle members.

2. In an automobile-frame, the combination of a beam mounted above the axle members; said axle members; a hanger depending from said beam midway thereof; a pair of tie-rods connecting said hanger with the ends of said beam; and a pair of strut-rods connecting said hanger with said axle members.

3. In an automobile-frame, the combination of a beam mounted above the axle members; said axle members; a hanger depending'from said beam midway thereof; a pair of tie-rods connecting said hanger with the ends of said beam; and a pair of strut-rods one end of each of which is pivotally connected with the adjacent axle member and the other end of each of which is pivoted to said hanger.

4.. In an automobile-frame, the combination of a beam; a hanger depending therefrom; a driving-shaft journaled in said hanger; a pair of tie-rods extending downwardly from the ends of said beam to said hanger; a pair of strut-rods extending downwardly from said hanger to axle members; and said axle members.

5. In an automobile-frame, the combination of a beam; a hanger depending from the central part thereof; a pair of tie-rods connecting said hanger with the ends of said beam and transmitting a pulling stress thereto; means connecting said beam with axle members; and a pair of strut-rods connecting said hanger with said axle members and transmitting thereto a compressive stress; and said axle members.

BENJAMIN A. GRAMM. Witnesses:

OHAs. F. SMITH, B. W. TWYMAN. 

